Antitheft device



Aug. 2, l. M. GLICK ANTITHEFT DEVICE Filed Jan.17. 1923 Iii/veriio? I IsaacZEI, GZ?0%.'

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UNITED STATES ISAAC IVE. GLICK, OF BOSTON, MASSACHUSETTS.

ANTITHEF'I DEVICE.

Application filed January 17, 1923. Serial No. e1a,129.

My invention relates to anti-theft devices and particularly but not exclusively-to one for motor vehicles. 9

My invention will be best understood from the following description when read in light of the accompanying drawings of one specific ei'nbodiment of my invention selected for illustrative purposes, while the scope of my invention will be more particularly pointed out in the appended claims.

In the drawings Fig. 1 shows an elevation of my invention applied to amotor vehicle;

Figs. 2 and 3. are sections respectively on the lines 2-2and 3-3 of Fig. 1;

Fig. 4c is a section on the line 4.4 of Fig. 3;

Fig. 5 shows a detail;

Fig. 6 is a wiring diagram; and

Fig. 7 shows a detail. T

Referring to the drawings and to the preferred embodiment of my invention I have shown a motor vehicle windshield 1' to the stanchions 3 of which I secure a roller curtain indicated in its entirety at 5 which may be drawn over the windshield so as to obstruct vision from the driversseat.

Specifically at the upper end of the stanchions I secure brackets 7 which carry the tubular casing 9 for the curtain. In the casing I mount a curtain roller 11 about which the curtain is adaptedto bewound, the casing being provided with a longitudinally extending aperture 13 through which the curtain extends.

In the submitted embodiment of my invention I have shown a curtain which comprises a plurality of spring steel bands 15. Carried by these bands I provide a plurality of transversely positioned, closely adjacent slats 17 which preferably are formed of metal. The bands 15 are 'so formed that they tend when unrestrained to assume the shape of a flat spiral, that is, a shape similar to a clock spring. One end of each band is connected to the curtain and by this construction when the curtain is released the same will turn the roller and consequently will automatically roll up.

For guiding the curtain I secure to the stanchions 3, as for example by means-of the rivets 19, channel shaped members 21 which on one side are formed with the slots 23 into thi h ends of the slats projeet The guiding ofthe slats in this manner prevents the curtain from bulging under the influence of the bands 15.

is adapted to be operated by anassociated push button 30. I have shown three switches distributed along each strip 25 and between each switch and the back wall of the channel member 21 I have "shown a compression spring 3l these springs acting to hold the strip yielding'ly againstthe front walloi the channel member so as to close the slot 23 therein.

At the lower end of the curtain I'provide a curtain rod 33 which carries thehandle 35 for manipulating the. curtain. For locking the curtain in its lowermost position I provide a key controlled lock of known construction having a rotary key-receiving barrel 37,said lock having the oppositely extending bolts 39 which when the lock is turned enter the slots 23. and project under the bottom ends of the strips 25, the latter in this "manner acting as keepers for the bolts.

As shown herein the bolts 39 adjacent the barrel 2370f the lock are providedwith racks 40 whichmesh with a gear 40 formed by providing the barrel 37: with teeth. .As shown by 7 the respective, racks 40 mesh with the gear 4:0 at opposite sides of the latter so that turning of the barrel will be effective to move the bolts 39 simul taneously in opposite directions.

For indicating tampering with the curtain I provide suitable alarms which, although they may be otherwise, as herein illustrated are of the audible type being exemplified by the electric bells 41 and 4.3, the

former of which are located at opposite ends of the curtain casing 9 as'is indicated in Fig. 1, while the latter may be located in any inaccessible part of the vehicle to prevent tampering therewith.

As is indicated by Fig. 6 one terminal of the several switches 29 enclosed in each channel member 21 are connected in. by means er a wire 4.4. m

other terminal grounded.

of the corresponding bell 41, the other terminal of the bell being grounded. The

other terminals of the push buttons are connected to wires 45 which, by means of a circuit 47 which includes the bell. 43, are

placed in electrical communication with the discharge side of the ammeter 49 or in any other convenient Way with a terminal of the battery 51 or other source of electromotive force. Herein the battery has its As will be obviousclosure of any. of the push buttons will ring the hell on the corresponding side of the windsheld and with it the bell 43.

By use of a pluralityof bells .andjswitches I reduce to a minimum the possibility of so tampering 'with the mechanism that no alarm will be sounded. i

In operation when the curtain is drawn to its lowermost position the lock is operated to cause thebolts 39 to extend under the lower end of the strips 25, and if it is attempted to force the curtain up the bolt 39 will cause one or both of the strips to be pressed outwardly thereby causing one or more of the push buttons to contact the outer walls o fthe channel members 21 and therebyclosing one or more of the switches and actuating the alarm.

' Although I have described for purposes of illustration one specificembodiment of my invention it is to be understood thatI am not limited thereby to its particular mechanical details but that within the scope of my invention wide deviations may be made therefrom without departing from the spirit of my invention.

, Claims: i

V 1. An anti-theft device forvehicles having a Windshield, comprising a curtain hav ing a position in which it is operative to obstruct vision through said windshield, side guides for said curtain, a lock having a bolt for holding said curtain at the bottom of said sideguides, an alarm, means including switch mechanism for actuating said alarm,

and means carried bv one of saidside guides wards its inoperative position will actuate said switch mechanism.

3. An anti-theft device for vehicles having a windshield,comprising a curtain havmg a position in which it is operative to obstruct visionthrough saidwindshield, side guides for said curtain, an-alarm, a switch in one of said side guides, a? bolt for holding said curtain at the bottom of said side guides, and a resilient strip extending along oneof said side guides in operative relation to said switch, whereby said bolt will con tact said resilient" strip and thereby actuate said switch when said curtain is raised without withdrawal of said bolt.

4. An anti-theft device for vehicles hav-.

ing a windshield, comprising a curtainhaving a position in which it is operative to obstruct vision through said windshield, side guides for said curtain, an alarm, a plurality of switches in one of said side guides, a boltfor "holding said curtain at the bottom of said side guidesg and a resilient strip extending along one of said. side guides in operative relation to said switches, whereby said bolt will contact said resilient strip and thereby actuate one or more of said switches whensaid curtainis raised without withdrawal of said bolt.

.In testimony whereof, I have signed my name to this specification.

saac M. GLIGK. 

